My first character is a similar build except i was going to take PD at last rank. Since conviction would increase its damage plus zaibas damage.
I’m only at paladin circle 1 right now, but im working on other characters. I went with a str/int split with some con.
You can solo really well, but in dungeons, 5 heal tiles doesnt feel like enough for more than 3 people.
Damage wise its pretty good. Smite annihilates mutant and devil types. Anything with plate armor too. Zaibas is a nice nuke that melts through enemies. While things are on cooldown, your autoattack is good enough to use while soloing, but in dungeons it feel pretty weak.
Try to get some good headgear with elemental attack to increase both your zaibas and melee skills. I’m not sure if conviction could increase your elemental damage from headgear and items, but if it did you will do quite a bit of extra damage.
Divine stigma… this is the skill that made me want to reroll. I was thinking this skill would make up for my lower str/int and it does. It has good benefits especially for this build, but it is very annoying to keep the buff up and you cant even have it 100% of the time. If they make this skill better i might go back to it. Edit: I just noticed you dont even have this in your build.
Keep in mind i only made it to pally1, so it could get even better later.
Edit2 Id also like to add that if you add crit gems to your gear, smite is really strong when it crits. you would need high level crit gems to make it work though. Some crit gear also. Even then you dont crit more than 30%-40% of the time lol. Zalcia helps.